Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d9b55463f11551f…

MALICIOUS

PDF

45.3 KB Created: 2020-10-28 16:14:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 05ab61afec1ff13bcaf5e89c28a3b482 SHA-1: 22df9c93a9319d021bf02e954e32a7b697cc664f SHA-256: 3d9b55463f11551f1ec796296dd43d848955e9c6f94612e188c25a2370532db1
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ggtraff.ru/strik?keyword=similes+and+metaphors+worksheet+5th+grade In PDF document text
    • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/378398.pdfIn PDF document text
    • https://gixapogaruxa.weebly.com/uploads/1/3/4/3/134331356/tifutodigakujugefo.pdfIn PDF document text
    • https://bogadisosupotaj.weebly.com/uploads/1/3/0/7/130776541/zojilalir.pdfIn PDF document text
    • https://godadonalizubo.weebly.com/uploads/1/3/1/4/131437317/jinakapurepe.pdfIn PDF document text
    • https://getedizexagan.weebly.com/uploads/1/3/0/7/130740146/fafoxogazevema.pdfIn PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/manar.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/3c55ea60-9c58-46eb-b094-e151a77e8b32/el_palacio_de_la_luna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0601/6674/files/79966485054.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/definition_of_non_probability_sampling.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/xitodosokedugowufidogivan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1db2601-252c-4be9-a541-50e3fb0d79cd/rawezewabebutugep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/6794/0250/files/panasonic_lumix_gx85_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/bacterias_anaerobias_facultativas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba458250-efe7-4adb-8662-d478480a2303/61462719609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0878/9150/files/reponaxosarelizitog.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/nikurisuroj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/7175/8232/files/jumupo.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/xifukabuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcfaa5fe-115b-42fd-92a7-34f350ff9000/3582640280.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/4283/0014/files/tomuviduvisoboweliligigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9623/5943/files/dilaxulufisi.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A2 5544 bytes
SHA-256: a7450c8afdacc11a1e9468fd602866a79d56e08f890469ff23ee6aa5a3fa0dea
font_01_sfnt_off0000764f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x764F 10268 bytes
SHA-256: 47f8479c8b5507b547cac8d2e3db8e7f8159f7297ed429aed3c5f2d7f15144f3
font_02_sfnt_off00009982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9982 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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